NMR tube cutter

A simple NMR tube cutting aid. This was designed to shorten NMR tubes filled under protective gas (to access/retrieve crystals near the bottom). The whole thing fits through a NS29 ground glass connection to maintain the protective atmosphere and also works with our muCHILL inert microscopy cold stage as shown in the pictures (published here: https://journals.iucr.org/j/issues/2018/02/00/gj5200/gj5200.pdf).
One M2x12 screw and M2 nut needed for assembly.

Usage:

1. Start by scoring the NMR tube all-around, using a glass cutter. Make sure you will not spill solvent upon cutting.
2. Place NMR tube in tool, align score mark with line on tool (red arrows).
   Note: the tool will hold the tube, but press only VERY GENTLY!
3. Transfer to Schlenk vessel or other target platform (optional).
4. Slightly increase pressure until it snaps.
5. Remove tool with upper piece, note that the tube part below the cut is loose and can freely detach. The tool will grip the upper piece.